205021222 has 16 divisors (see below), whose sum is σ = 351862560. Its totient is φ = 87766848.

The previous prime is 205021199. The next prime is 205021231. The reversal of 205021222 is 222120502.

It is a junction number, because it is equal to n+sod(n) for n = 205021196 and 205021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5304 + ... + 20932.

It is an arithmetic number, because the mean of its divisors is an integer number (21991410).

Almost surely, 2^205021222 is an apocalyptic number.

205021222 is a deficient number, since it is larger than the sum of its proper divisors (146841338).

205021222 is a wasteful number, since it uses less digits than its factorization.

205021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16575.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 205021222 is about 14318.5621484840. The cubic root of 205021222 is about 589.6572000808.

Adding to 205021222 its reverse (222120502), we get a palindrome (427141724).

The spelling of 205021222 in words is "two hundred five million, twenty-one thousand, two hundred twenty-two".